As of May 2026 Southwest Airlines has a market cap of โน1.806 Trillion. This makes Southwest Airlines the world's 1227th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.
On May 18th, 2026 the market cap of Southwest Airlines was reported to be: